i9-9900KS vs Ryzen 9 5900

Primary details

Comparing Ryzen 9 5900 and Core i9-9900KS processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	245	632
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	10.84
Market segment	Desktop processor	Desktop processor
Series	AMD Ryzen 9	Intel Core i9
Power efficiency	31.33	9.08
Architecture codename	Vermeer (2020−2024)	Coffee Lake-R (2018−2019)
Release date	12 January 2021 (3 years ago)	28 October 2019 (5 years ago)
Launch price (MSRP)	no data	$513

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Ryzen 9 5900 and Core i9-9900KS basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores	12 (Dodeca-Core)	8 (Octa-Core)
Threads	24	16
Base clock speed	3 GHz	4 GHz
Boost clock speed	4.7 GHz	5 GHz
Bus type	no data	DMI 3.0
Bus rate	no data	4 × 8 GT/s
Multiplier	30	40
L1 cache	64K (per core)	64 KB (per core)
L2 cache	512K (per core)	256 KB (per core)
L3 cache	64 MB	16 MB (shared)
Chip lithography	7 nm, 12 nm	14 nm
Die size	81 mm2	180 mm2
Maximum core temperature	no data	100 °C
Maximum case temperature (TCase)	95 °C	72 °C
Number of transistors	4,150 million	no data
64 bit support	+	+
Windows 11 compatibility	+	+
Unlocked multiplier	+	+

Compatibility

Information on Ryzen 9 5900 and Core i9-9900KS compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration	1	1 (Uniprocessor)
Socket	AM4	FCLGA1151
Power consumption (TDP)	65 Watt	127 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen 9 5900 and Core i9-9900KS. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI	+	+
AVX	+	+
vPro	no data	+
Enhanced SpeedStep (EIST)	no data	+
Turbo Boost Technology	no data	2.0
Hyper-Threading Technology	no data	+
TSX	-	+
Idle States	no data	+
Thermal Monitoring	-	+
SIPP	-	+

Security technologies

Ryzen 9 5900 and Core i9-9900KS technologies aimed at improving security, for example, by protecting against hacks.

TXT	no data	+
EDB	no data	+
Secure Key	no data	+
MPX	-	+
Identity Protection	-	+
SGX	no data	Yes with Intel® ME
OS Guard	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by Ryzen 9 5900 and Core i9-9900KS are enumerated here.

AMD-V	+	+
VT-d	no data	+
VT-x	no data	+
EPT	no data	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Ryzen 9 5900 and Core i9-9900KS. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-3200	DDR4
Maximum memory size	128 GB	128 GB
Max memory channels	no data	2
Maximum memory bandwidth	51.196 GB/s	42.671 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	-	Intel UHD Graphics 630
Max video memory	-	64 GB
Quick Sync Video	-	+
Clear Video	-	+
Clear Video HD	-	+
Graphics max frequency	-	1.2 GHz
InTru 3D	-	+

Graphics interfaces

Available interfaces and connections of Ryzen 9 5900 and Core i9-9900KS integrated GPUs.

Number of displays supported

-

3

Graphics image quality

Maximum display resolutions supported by Ryzen 9 5900 and Core i9-9900KS integrated GPUs, including resolutions over different interfaces.

4K resolution support	-	+
Max resolution over HDMI 1.4	-	4096 x 2304@24Hz
Max resolution over eDP	-	4096 x 2304@60Hz
Max resolution over DisplayPort	-	4096 x 2304@60Hz

Graphics API support

APIs supported by Ryzen 9 5900 and Core i9-9900KS integrated GPUs, sometimes API versions are included.

DirectX	-	12
OpenGL	-	4.5

Peripherals

Specifications and connection of peripherals supported by Ryzen 9 5900 and Core i9-9900KS.

PCIe version	4.0	3.0
PCI Express lanes	no data	16

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

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Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

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Pros & cons summary

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Performance score	21.63	12.25
Recency	12 January 2021	28 October 2019
Physical cores	12	8
Threads	24	16
Chip lithography	7 nm	14 nm
Power consumption (TDP)	65 Watt	127 Watt

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Should you still have questions on choice between Ryzen 9 5900 and Core i9-9900KS, ask them in Comments section, and we shall answer.

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